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When lifting the assumption of spatially-independent scattering centers in classical linear transport theory, collision rate is no longer proportional to angular flux / radiance because the macroscopic cross-section $\Sigma_t(s)$ depends on…

统计力学 · 物理学 2019-11-12 Eugene d'Eon

Shape resonances in photoionization of atoms and molecules arise from a particular geometry of the ionic potential which traps the receding photoelectron in a quasi-bound state in a particular partial wave. This mechanism allows us to…

原子物理 · 物理学 2026-03-03 Anatoli S. Kheifets , Stephen Catsamas

We provide an analysis of vector meson photoproduction in the channel of the vector meson decaying into a pseudoscalar meson plus a photon, i.e. $V\to P\gamma$. It is shown that non-trivial kinematic correlations arise from the measurement…

高能物理 - 唯象学 · 物理学 2009-11-11 Qiang Zhao , J. S. Al-Khalili , P. L. Cole

We develop a formula for matching a Taylor series about the origin and an asymptotic exponential expansion for large values of the coordinate. We test it on the expansion of the generating functions for the moments and connected moments of…

量子物理 · 物理学 2015-05-30 Paolo Amore , Francisco M. Fernández

The Voronoi tessellation of a homogeneous Poisson point process in the lower half-plane gives rise to a family of vertical elongated cells in the upper half-plane. The set of edges of these cells is ruled by a Markovian branching mechanism…

概率论 · 数学 2022-03-22 Pierre Calka , Yann Demichel , Nathanaël Enriquez

We analyze the cross section for vector meson photo-production off a deuteron for the intermediate range of photon energies starting at a few GeVs above the threshold and higher. We reproduce the steps in the derivation of the conventional…

高能物理 - 唯象学 · 物理学 2008-11-26 T. C. Rogers , M. M. Sargsian , M. I. Strikman

Tissue growth can be modeled in two dimension by only using circular granular cells, which can grow and produce child. Linear spring-dashpot model is used to bind the cells with a cut-off interaction range of 1.1 times sum of radii of…

生物物理 · 物理学 2014-05-21 Sparisoma Viridi , Siti Nurul Khotimah , Devi Aprianti , Luman Haris , Freddy Haryanto

Undulator radiation from synchrotron light sources must be transported down a beamline from the source to the sample. A partially coherent photon beam may be represented in phase space using a Wigner function, and its transport may use some…

加速器物理 · 物理学 2021-01-26 Boaz Nash , Nicholas Goldring , Jonathan Edelen , Stephen Webb , Rafael Celestre

The distributions $P(M_L,M_S)$ of the total magnetic quantum numbers $M_L$ and $M_S$ for $N$ electrons of angular momentum $\ell$, as well as the enumeration of $LS$ spectroscopic terms and spectral lines, are crucial for the calculation of…

原子物理 · 物理学 2024-10-03 Jean-Christophe Pain , Michel Poirier

Smith-Purcell radiation is generated by a charged particle beam passing close to the surface of a diffraction grating which has a strong dependency of the emitted radiation intensity on the form of the grating profile. For relativistic…

加速器物理 · 物理学 2020-04-14 Weiwei Li , Weihao Liu , Zhigang He , Qika Jia , Lin Wang

We summarize our model for long-duration gamma ray bursts (GRBs) that fits the redshift (z) distributions measured with Swift and missions before Swift, and the pre-Swift GRB jet opening-angle distribution inferred from achromatic breaks in…

天体物理学 · 物理学 2008-11-26 Truong Le , Charles D. Dermer

We calculate production cross sections of a single rotating string from a collision of two light states in bosonic string theory. We find that the cross sections are written in terms of the modified Bessel function of the first kind with…

高能物理 - 理论 · 物理学 2008-11-26 Tsunehide Kuroki , Toshihiro Matsuo

Generation and prediction of time series is analyzed for the case of a Bit-Generator: a perceptron where in each time step the input units are shifted one bit to the right with the state of the leftmost input unit set equal to the output…

凝聚态物理 · 物理学 2016-08-31 E. Eisenstein , I. Kanter , D. A. Kessler , W. Kinzel

We study the Tauberian relations between the moment generating function (MGF) and the complementary cumulative distribution function of a random variable whose MGF is finite only on part of the real line. We relate the right tail behavior…

概率论 · 数学 2016-08-08 Sidi Mohamed Aly

We report that guiding light beams, ranging from continuous beams to femtosecond pulses, along liquid crystal defect lines can transform them into vector beams with various polarization profiles. Using Finite Difference Time Domain…

软凝聚态物质 · 物理学 2015-06-22 Miha Čančula , Miha Ravnik , Slobodan Žumer

Recently, the generating function has been proposed as an alternative reduction method. This method has been tested at the one-loop level, including the tensor reduction and propagators with higher powers. In this work, we initiate the…

高能物理 - 理论 · 物理学 2025-09-24 Xinhe Chen , Bo Feng , Liang Zhang

We study the problem of propagating the mean and covariance of a general multivariate Gaussian distribution through a deep (residual) neural network using layer-by-layer moment matching. We close a longstanding gap by deriving exact moment…

机器学习 · 计算机科学 2026-05-11 Simon Kuang , Xinfan Lin

In this paper, we investigate certain combinatorial numbers, the \textit{moment generating Stirling numbers}. They are a special case of Hsu's generalized Stirling numbers and satisfy many more properties and combinatorial identities than…

组合数学 · 数学 2022-06-20 Ludwig Frank

The lower-dimensional maximal polytopes associated with an iteration stable (STIT) tessellation in $\RR^d$ are considered. They arise in the spatio-temporal construction process of such a tessellation as intersections of $(d-1)$-dimensional…

概率论 · 数学 2012-09-04 Nguyen Ngoc Linh , Christoph Thaele

Gradient jet tomography in high-energy heavy-ion collisions utilizes the asymmetric transverse momentum broadening of a propagating parton in an inhomogeneous medium. Such broadening is studied within a path integral description of the…

高能物理 - 唯象学 · 物理学 2023-04-12 Yu Fu , Jorge Casalderrey-Solana , Xin-Nian Wang